package com.ruoyi.web.core.config;

import com.ruoyi.web.security.filter.JwtAuthenticationTokenFilter;
import com.ruoyi.web.security.handle.AuthenticationEntryPointImpl;
import com.ruoyi.web.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

import javax.annotation.Resource;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig {

  @Configuration
  @Order(99)
  public static class RuoyiSecurityConfig extends WebSecurityConfigurerAdapter {
    /**
     * 自定义用户认证逻辑
     */
    @Resource(name = "userDetailsServiceImpl")
    private UserDetailsService userDetailsService;

    /**
     * 认证失败处理类
     */
    @Autowired
    private AuthenticationEntryPointImpl unauthorizedHandler;

    /**
     * 退出处理类
     */
    @Autowired
    private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /**
     * token认证过滤器
     */
    @Autowired
    private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /**
     * 跨域过滤器
     */
    @Autowired
    private CorsFilter corsFilter;

    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Primary
    public AuthenticationManager ruoyiAuthenticationManagerBean() throws Exception {
      return super.authenticationManagerBean();
    }

    /**
     * anyRequest          |   匹配所有请求路径
     * access              |   SpringEl表达式结果为true时可以访问
     * anonymous           |   匿名可以访问
     * denyAll             |   用户不能访问
     * fullyAuthenticated  |   用户完全认证可以访问（非remember-me下自动登录）
     * hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问
     * hasAnyRole          |   如果有参数，参数表示角色，则其中任何一个角色可以访问
     * hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问
     * hasIpAddress        |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问
     * hasRole             |   如果有参数，参数表示角色，则其角色可以访问
     * permitAll           |   用户可以任意访问
     * rememberMe          |   允许通过remember-me登录的用户访问
     * authenticated       |   用户登录后可访问
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
      httpSecurity
              // CSRF禁用，因为不使用session
              .csrf()
              .disable()
              // 认证失败处理类
              .exceptionHandling()
              .authenticationEntryPoint(unauthorizedHandler)
              .and()
              // 基于token，所以不需要session
              .sessionManagement()
              .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
              .and()
              // 过滤请求
              .authorizeRequests()
              // 对于登录login 验证码captchaImage 允许匿名访问
              .antMatchers("/login", "/register", "/captchaImage")
              .anonymous()
              .antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**", "/system/config/configKey/sys.theme.setting")
              .permitAll()
              .antMatchers("/common/download**")
              .anonymous()
              .antMatchers("/common/download/resource**")
              .anonymous()
              .antMatchers("/swagger-ui.html")
              .anonymous()
              .antMatchers("/swagger-resources/**")
              .anonymous()
              .antMatchers("/webjars/**")
              .anonymous()
              .antMatchers("/*/api-docs")
              .anonymous()
              .antMatchers("/druid/**")
              .anonymous()
              // 除上面外的所有请求全部需要鉴权认证
              .anyRequest()
              .authenticated()
              .and()
              .headers()
              .frameOptions()
              .disable();
      httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
      // 添加JWT filter
      httpSecurity.addFilterBefore(
              authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
      // 添加CORS filter
      httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
      httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
    }

    /**
     * 身份认证接口
     */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
      auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
    }
  }
}
